Greenwich Town property record for 70 William St, Greenwich, CT 06830
| Property Type | Duplex |
|---|---|
| Details | 3 bd · 3 ba · 2,081 sqft · built 1900 |
| Lot Size | 0.1 acres (4,356 sqft) |
| Owner | Trust Name on Record |
| Last Sale | $3,100,000 (Jun 2004) |
| Tax Bill | $9,012 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 07-1634S |
| Primary APN | 07-1634S |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 9 Rooms |
| Stories | 3 Stories |
| Building Area | 2,081 sqft Living Area |
| Basement Area | 240 sqft |
| Unfinished Basement | 240 sqft |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1960 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 4,356 sqft (0.1 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Gas |
| Account Number | 283/096 |
|---|---|
| Street Address | 70 WILLIAM ST |
| City | GREENWICH |
| State | CT |
| Zip | 06830-5637 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R-6 |
| Legal Block | 1634/S |
| Jurisdiction | GREENWICH CT |
| Township / Civil Division | GREENWICH |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 10600 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Fourth Ward Historic District listed 2000 · 160 contributing resources · NRIS 00000324 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Greenwich Town records, as of June 25, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Trust Name on Record |
|---|---|
| Mailing Address | 70 WILLIAM ST, GREENWICH, CT 06830-5637 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 3, 2004 · Amount on Record |
| Deed Sale | Jun 3, 2004 · Amount on Record |
| Deed Book / Page | 4660 / 4 |
| Record Updated | Sep 20, 2026 |
Source: Greenwich Town assessment roll, as of June 25, 2026
| Type | Name |
|---|---|
| State | Connecticut |
| County Subdivision | Greenwich Town |
| Unified School District | Greenwich School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $9,012.00 | $729,190 (-) Land $573,440 Building $155,750 | $510,433 Land $401,408 Building $109,025 |
| 2024 | $9,012.00 (+6.21%) | ||
| 2023 | $8,485.00 (+0.92%) | $729,190 (-) Land $573,440 Building $155,750 | |
| 2022 | $8,408.00 | $729,190 Land $573,440 Building $155,750 |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
Source: FEMA National Flood Hazard Layer, effective November 28, 2025
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99% of Connecticut |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | AQUARION-EASTERN FAIRFIELD COUNTY private · serves 351,756 people · EPA ID CT0150011 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2025 |
| Lead | Under 1 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 24 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 316 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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